Blowpipe.



Witnesses 1.11.; DOWNIE.

BLOWPIPE.

APPLICATION FILED FEB- 5,1916.

Patenfed May 9, 1916.

'Attorneys UNITED STA S PA JAMES H. nowmE, 01 SAN ANTONIO,

BLOWPIPE.

Specification of Letters Patent.

Patented May 9, 1915.

Application filed February 5. 1816. Serial No. 78,452

pipes or hydrocarbon tori-hes. nnd aims to provide a novel and improved derive (it that character.

It the OhJeet ol' the invention to provide a blow )l )e H8111" n Bunnen burner. lmvin" h t assembled therewith in a novel nmnner an air blast tulle extending to the mouth of the burner, whereby when the :ir lilust is not used, ii hot Bunsen llun'ie i: prnvided, mad when the nil hlnst is used. an xtremely hot needle flame is provided.

It is also the objei't of the invention to prnvide novel means for supporting the hlovvpipe. whereby it can he set upon n tulili lieneh. or other aupport. w li fi' th blowpipe can he handled or inunignd ted in the hand in u convenient and d ile manner.

The invention :ilsn ni ms to reduee the t rum ture to its simplest and most inexpeiuvive form, without depreeinting th value and utility thereof.

With the foregoing and other oldeets in view which will appear as the dewriptiou proceeds, the invention resides in the eonilii' nation and inrungen'ient of parts and in the details of construction hereinzitter desvrihed and claimed, it being undere'mod dud changes in the pi'eeise embodiment it th invention herein disclosed enn he nuuie within the scope of whatis claimed without depart ing from the spirit of the invention.

The invention is illustrated in the :uzeompunying drawing wherein K Figure 1 is a side elevation of the hlon pipe and its supporting means, the base being shown in section. Fig. is u longrl tiulinal seetion of the hlowpipe. taken on the line 2?! of Fig. l, portions being broken away and others being shown in plan Fig. 3 is u sectional detail taken on the line il--3 of Fig. l.

In (-arrying out the invention, -12 pro- \ifled u suitable standard l \vliieh is also used Ila a trundle for the lilowpigae. and \Yll "i! in provided Pit its lower end with it redueerl tapered shank '2- to iii tightly in t time ed uliertui'e ur m e T4 m an iron n or able lms l. The upper end of the standard 1 is e in n ferrule of a strap aclially within means of :3. ro ngaged 5 and termini gs l0, through \vhieh is engn the hunt l 2 I man nine in or 1l\ at in rel 12 22nd plug plume. The pmtriidnir him is engz 3 to see ing tei enrve-gl, dbl zit imrrel ill! for fl xible enndu-z, gas and air under tube 1.": extends barrel 1 the axis of the of the hose or urce of The air blast e. vi 1w tram 1 6 ends of the barrel 1L she-rear; the portion oi the tube 15 hetween the offset. and the tip 1 is arranged ziXinllj m nm'entrienli) of when nu l5 where through the plug they pal re di apo cl zit go. Sill... (it th nxis o? the l: gel. and Hi tip :30 il th tune H terminzi udjneent th Clo? .i end of the barrel or the plug 1-). The tip lll l the. tube 1;; tern'iiluff-F within the inoutn. 5

if the barrel The barr l 1L3 provided adjacent its closed end with u "ihle nuniher zit inlet openings oi ane lininetrn: Ely opp0- site one, hein the tube H. l ings.

Lne tubes 1-? and 1:) are combustible mixture, which will burn under all conditions with a smokeless flame. Thus, even though the air blast is not used, a smokeless hot flame is provided. By reason of the air entering the openings 21 admixing with the gas, before the gas reaches the tip 19 of the air blast tube 15, a more perfect combustion of the gas will result, resulting in a hotter flame. A Bunsen flame is pr0- vided when the air blast is not used, in order that the object to be soldered or otherwise acted upon can be effectively heated, and then when the air blast is turned on, this provides an extremely hot needle flame.

The barrel 12 in extending through the band 8 can be clamped thereby, by tightening the screw 11 to contract the band, and when the band is loosened, the barrel 12 can be rotated about its axis, to bring the terminals 17 of the gas and air blast tubes to one side or the other, or to any suitable point, out of the way. Furthermore, when the band 8 is loosened, the barrel 12 can be adjusted longitudinally, whereby the openings 21 can be moved partially within or completel out of the band 8. This band 8 will there ore serve as a shutter or valve controlling the flow of air through the openings 21, whereby the supply of air into theBunsen burner can be regulated as desired. When the standard 1 is supported by the base 4, the blowpipe can be supported upon a table, bench, or other support, and when the screw 9 is loosened, the blowpipe can be swung to various positions in a vertical plane, it being an easy matter to rotate the blowpipe about a vertical axis also. The blowpipe can thus be supported in various angular positions, and by detaching the standard 1 from the base 4, the standard can be used as a handle for manipulating the blowpipe, and the handle and barrel can be swung to various angles relative to one another as may be found more convenient.

Having thus described the invention, what is claimed as new is:

1. A blowpipe embodying a barrel having an air inlet opening adjacent one end, a plug fitted in said end, and gas and air blast tubes extending through said plug longitudinally of the barrel, the gas tube terminating adjacent said opening, the air blast tube having an offset between the ends of the barrel, the end of the air blast tube terminating at the other end of the barreland that portion of the air blast tube between the offset and end being arranged axially of the barrel.

2. In a device of the character described, a supporting member, a pivot carried thereby, a band having terminals engaging said pivot, one side of the band having an outstanding loop, a clamping element engaged through said loop, and a blowpipe fitted within said band. A

3. In a device of the character described, a base having a tapered socket, a standard having a tapered shank to fit in said socket, the standard being adapted for use as a handle, a band pivoted to the standard, and a blowpipe fitted within the band.

In testimony that I claim the foregoing as my own, I have hereto aflixed my signature in the presence of two witnesses.

JAMES H. DOWNIE.

Witnesses W. E. Enrorm,

E. MEHLICH. 

